Object B & C would repel each other

Object B & C would attract each other

Nothing would happen, since objects B & C are neutrally charged

The oppositely charged objects A & C will repel each other

a) Nothing

b) The polyethylene ruler would take the wool’s positive charges

c) The wool cloth would take the polyethylene ruler’s negative charges

The polyethene ruler would take the wool's negative charge.

The glass window would become negatively charged

The cotton cloth would become negatively charged

The cotton cloth would become positively charged

The glass window & cotton cloth would stay neutrally charged

Fur rubbed with silk will become negatively charged because the silk will gain/receive negative charges

Acetate rubbed with cotton will become positively charged because the acetate will gain/receive positive charges

Ebonite rubbed with fur will become negatively charged because the ebonite will gain/receive negative charges

Polyethylene rubbed with wool will become negatively charged because the polyethylene will lose positive charges & the wool will gain/receive these positive charges

Nothing, they are both neutrally charged

They will repel

They will attract

Nothing, they both carry no charge

Nothing, they are both neutrally charged

They will repel

They will attract

Nothing, they both carry no charge